Publications by authors named "Varney Edwin Johnson"
Article Synopsis
- Biochar from rice straw loaded with manganese (BC-Mn) was tested for its ability to adsorb heavy metals Pb, Cd, and As, showing significant competitive and promotional interactions.
- In a binary system, Pb and Cd demonstrated competition for adsorption sites, leading to a decrease in their individual adsorption capacities, while a notable increase in As and Cd adsorption occurred in their combined presence.
- The study utilized Langmuir isotherm modeling and various analyses (zeta, FTIR, XPS) to understand the mechanisms behind the interactions and provided insights for improving treatment strategies for wastewater contaminated with these heavy metals.
The contamination of soils by mercury (Hg) seriously threatens the local ecological environment and public health. S-functionalized amendments are common remediation technology, yet, Hg re-activation often occurs in the commonly used immobilization remediation by S-functionalized amendments, resulting in an unsatisfactory remediation effect. In this study, a novel FeS-Se functionalized biochar composite (FeS-Se-BC) amendment was prepared and applied for the efficient remediation of Hg-polluted soil.
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